25405065067 has 2 divisors, whose sum is σ = 25405065068. Its totient is φ = 25405065066.

The previous prime is 25405064987. The next prime is 25405065071. The reversal of 25405065067 is 76056050452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25405065067 - 2³¹ = 23257581419 is a prime.

It is not a weakly prime, because it can be changed into another prime (25405165067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12702532533 + 12702532534.

It is an arithmetic number, because the mean of its divisors is an integer number (12702532534).

Almost surely, 2^25405065067 is an apocalyptic number.

25405065067 is a deficient number, since it is larger than the sum of its proper divisors (1).

25405065067 is an equidigital number, since it uses as much as digits as its factorization.

25405065067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 25405065067 in words is "twenty-five billion, four hundred five million, sixty-five thousand, sixty-seven".